Long-acting anti-fog silicon-based gel antifogging agent for lens and preparation method and application thereof

Abstract

The invention relates to a long-acting anti-fog silicon-based gel antifogging agent for a lens and a preparation method and application thereof. The antifogging agent is composed of a silicon-based sol solution and a long-chain polysaccharide / amino molecule crosslinking solution, the silicon-based sol solution comprises tetraethyl orthosilicate, cyclopentasiloxane, a polydimethylsiloxane crosslinking polymer and an organic solvent; the long-chain polysaccharide / amino molecule crosslinking solution comprises deionized water, polysaccharide molecules, polyvinyl alcohol, an amino molecule surfactant and a photocatalytic adhesive agent cerium oxide. Silica sol in the anti-fog sol is crosslinked with hydrophilic polysaccharide molecules and amino molecules to form a core-shell structure with arigid center and a soft long chain, water drops are enabled to evenly and rapidly expand whole surface through capillary action, and moisture absorption and antifogging effects are achieved; the long-chain polysaccharide / amino molecule is used as an end-capping reagent to inhibit the volatilization of a surfactant, cerium oxide is introduced to increase the surface adsorption force of silica sol,and the problem of poor light transmittance caused by poor adhesive force of an original water-based anti-fog coating film is solved.

Description

technical field [0001] The invention belongs to the technical field of surface coating modification materials, and in particular relates to a long-acting anti-fog silicon-based gel anti-fog agent for lenses, a preparation method and application thereof. Background technique [0002] The pneumonia epidemic caused by the new coronavirus that broke out at the end of 2019 has led to an extreme shortage of medical resources and protective materials. At the same time, the transmission route and mechanism of the virus have not been fully revealed, resulting in the need for long-term wear of masks and goggles by medical staff and on-duty personnel fighting on the front line. and protective clothing. The current commercial goggles with anti-fog performance are prone to fogging after continuous use for more than 1 hour, affecting the visual function of the user to varying degrees, and in severe cases, causing the user to lose sight and lose working ability. Feedback from medical staf...

AI Technical Summary

Problems solved by technology

[0002] The pneumonia epidemic caused by the new coronavirus that broke out at the end of 2019 has led to an extreme shortage of medical resources and protective materials. At the same time, the transmission route and mechanism of the virus have not been fully revealed, resulting in the need for long-term wearing of masks and goggles by medical staff and on-duty personnel fighting on the front line. and protective clothing

Because of the relatively confined space, the nanoparticles in the anti-fog film on the surface of the goggles will be inhaled by the respiratory tract and deposited in the lungs, resulting in lung fibrosis or petrification; or they can freely pass through the cell membrane through the skin to interact with human proteins, bacteria and viruses. Very high risk of inducing underlying disease

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